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2-Chlorobenzoic Acid CAS 118-91-2 2-Chloro-Benzoicaci

China 2-Chlorobenzoic Acid CAS 118-91-2 2-Chloro-Benzoicaci, Find details about China Ortho-Chlorobenzoic Acid, 2-Chlorobenzoic Acid from 2-Chlorobenzoic Acid CAS 118-91-2 2-Chloro-Benzoicaci

Model NO.
118-91-2
Appearance
Powder
Transport Package
Drums, Bags
Specification
99%
Origin
China
Model NO.
118-91-2
Appearance
Powder
Transport Package
Drums, Bags
Specification
99%
Origin
China




2-Chlorobenzoic Acid CAS 118-91-2 2-Chloro-Benzoicaci


 
Product name:2-Chlorobenzoic acid
Cas No.118-91-2
MFC7H5ClO2
MW156.57
StorageCool and Dry Place
PackageAluminium Foil and Carton Drum

Production Method

1. Use phthalic anhydride as a raw material for amidation and degradation reactions with sodium hydroxide and ammonia to prepare anthranilic acid, then diazotize with sodium nitrite and hydrochloric acid, and then replace it with cuprous chloride and hydrochloric acid. The crude o-chlorobenzoic acid is refined to obtain the finished product. 3. Obtained by chlorination and hydrolysis of o-chlorotoluene. 2. There are the following two preparation methods. Ortho-chlorotoluene chlorination hydrolysis method Ortho-chlorotoluene is placed in the reactor, irradiated with ultraviolet light, the reaction temperature is 100 ºC, and chlorine gas is introduced to carry out the chlorination reaction, and the depth of the chlorination reaction is increased to generate α, α, α, 2-tetra Chlorotoluene, or o-chlorotoluene as a raw material, chlorination with azobisisobutyronitrile as a catalyst, can also obtain α,α,α,2-tetrachlorotoluene, and then move the above product into the hydrolysis kettle, and add a little acid It is hydrolyzed to generate o-chlorobenzoyl chloride, and 2-chlorobenzoic acid can be obtained if the hydrolysis depth is large. The anthranilic acid diazotization method uses anthranilic acid as the raw material to add hydrochloric acid and sodium nitrite for diazotization, and then add a solution of Cu2Cl2 dissolved in hydrochloric acid to the diazonium solution, stir while adding, and obtain the result after post-treatment O-chlorobenzoic acid.

Use

It is an intermediate of medicines and pesticides. It is mainly used for the preparation of chlorpromazine, Kangyanling, diclofenac and other drugs, as well as dyes and color films.




2-Chlorobenzoic Acid CAS 118-91-2 2-Chloro-Benzoicaci
 

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